My cat walked over my keyboard and pressed "magical" SysRq u, doing an Emergency Remount R/O. How do I reverse this?
On How do I remount a filesystem as read/write?, SirCharlo claims
The correct syntax is:
sudo mount -o remount,rw /partition/identifier /mount/point
but that just yields another error,
mount: you must specify the filesystem type
and if I supply it, e.g.,
$ sudo mount -t ext4 -o remount,rw /dev/sda7 /
I'm back at the error message the OP reported,
mount: / not mounted or bad option
That diagnostic begs the question, which? Not mounted, or bad option? The exit status is 32, and man mount provides this key:
mount has the following return codes (the bits can be ORed):
0 success
1 incorrect invocation or permissions
2 system error (out of memory, cannot fork, no more loop devices)
4 internal mount bug
8 user interrupt
16 problems writing or locking /etc/mtab
32 mount failure
64 some mount succeeded
OK, looks like a mount failure. ;-)
What can I do about it?
BTW, in response to Alkthree's question "How do I remount", SirCharlo also suggest not a remount but umount followed by mount. Why?
